Operational, Deployment and Interworking Considerations for GMPLS

In order to deploy GMPLS technology in the existing IP/MPLS networks, various operation, deployment and interworking aspect of MPLS/GMPLS needs to be addressed. From the deployment perspective, GMPLS architecture document lists [RFC3945] three different scenarios in which GMPLS technology can be deployed: overlay, augmented and integrated. Reference [GMPLS-mig] addresses the problem of migration from MPLS to GMPLS networks using the integrated model. This draft addresses the same problem space for augmented model and illustrates the applicability of augmented model in deploying GMPLS technology in existing IP/MPLS networks. Another very important aspect of MPLS/GMPLS interworking is ability to effectively use GMPLS services in IP/MPLS networks. This includes ability to specify GMPLS LSPs in signaling requests based on the type of the setup desired, as well as considerations for the operation aspects of using GMPLS LSPs. In this draft, we highlight some deployment and MPLS/GMPLS interworking requirements and propose solutions to address them. We also highlight some operation aspects and the possible solution and provide applicability statement for the available options.